Differential muscarinic modulation of synaptic transmission in dorsal and ventral regions of the rat nucleus accumbens core

Title:

Differential muscarinic modulation of synaptic transmission in dorsal and ventral regions of the rat nucleus accumbens core

Creator:

Jiang, X., Zhang, J. J., Michael Y. Wang, and Sui, N.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:4965b9bd-cf1d-4a54-aaa6-e562ac0fc7ae
uuid:4965b9bd-cf1d-4a54-aaa6-e562ac0fc7ae

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie, physiology, muscarine, nucleus accumbens, postsynaptic potentials, paired-pulse ration, in vitro, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print

Description:

The nucleus accumbens (NAc) core is critical in the control of motivated behaviors. The muscarinic acetylcholine receptors (mAChRs) modulating the excitatory inputs into the NAc core have been reported to impact such behaviors. Recent studies suggest that ventral and dorsal regions of the NAc core seem to be innervated by distinct popula tions of glutamatergic projection neurons. To further examine mAChRs modulation of these glutamatergic inputs to the NAc core, we employed intracellular recordings in rat NAc coronal slice preparation to characterize: 1) the effects of muscarine, an mAChRs agonist, on membrane properties of the NAc core neurons; 2) depolarizing synaptic potentials (DPSP) elicited by ventral and dorsal focal electrical stimuli; and 3) paired-pulse response with paired-pulse stimulation. Here we report that the paired-pulse ratio (PPR) elicited by dorsal stimuli was grea ter than that elicited by ventral stimuli. Bath application of muscarine (1-30 μ M) decreased both ventral and dorsal DPSP in a concentration-dependent manner, with no effect on electrophysiological properties of NAc core neurons. Muscarine at 30 μ M also elicited larger depression of dorsal DPSP than ventral DPSP. Moreover, muscarine increased the PPR of both dorsal and ventral DPSP. These data indicate that the glutamatergic afferent fibers traversing the dorsal and ventral NAc are separate, and that differential decrease of distinct afferent excitatory neurotransmission onto NAc core neurons may be mediated by presynaptic mechanisms., X. Jiang ... [et al.]., and Obsahuje bibliografii a bibliografické odkazy

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2014 Volume:63 | Number:1

Harvested from:

CDK

Metadata only:

false